src-test/sys/dev/ioat/ioat_test.c, branch main

Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

2020-02-26T14:26:36Z

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718

ioatcontrol(8) could exercise 8k-aligned copy with page-break, crc and

2019-04-02T19:06:25Z

crc-copy modes. Reviewed by: cem Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D19780

ioat: don't specify inline for function with variable argument list

2017-03-04T12:51:57Z

Modern GCC and Clang simply ignore the qualifier, while the old base GCC produces a warning (treated as an error in the kernel build). Approved by: cem MFC after: 5 days

ioat(4): ioat_get_dmaengine(): Add M_WAITOK mode

2016-04-09T13:15:34Z

Sponsored by: EMC / Isilon Storage Division

ioatcontrol(8): Add support for interrupt coalescing

2015-12-14T22:02:01Z

The new flag, -c , sets the interrupt coalescing period in microseconds through the new ioat(4) API ioat_set_interrupt_coalesce(). Also add a -z flag to zero ioat statistics before tests, to make it easy to measure results. Sponsored by: EMC / Isilon Storage Division

ioat(4): Add ioatcontrol(8) testing for copy_8k

2015-12-10T02:05:35Z

Add -E ("Eight k") and -m ("Memcpy") modes to the ioatcontrol(8) tool. Prompted by: rpokala Sponsored by: EMC / Isilon Storage Division

ioat: Handle channel-fatal HW errors safely

2015-10-31T20:38:06Z

Certain invalid operations trigger hardware error conditions. Error conditions that only halt one channel can be detected and recovered by resetting the channel. Error conditions that halt the whole device are generally not recoverable. Add a sysctl to inject channel-fatal HW errors, 'dev.ioat..force_hw_error=1'. When a halt due to a channel error is detected, ioat(4) blocks new operations from being queued on the channel, completes any outstanding operations with an error status, and resets the channel before allowing new operations to be queued again. Update ioat.4 to document error recovery; document blockfill introduced in r290021 while we are here; document ioat_put_dmaengine() added in r289907; document DMA_NO_WAIT added in r289982. Sponsored by: EMC / Isilon Storage Division

ioat_test: Handled forced hardware resets gracefully

2015-10-29T04:16:52Z

Sponsored by: EMC / Isilon Storage Division

ioatcontrol(8): Add and document "raw" testing mode

2015-10-29T04:16:16Z

Allows DMA from/to arbitrary KVA or physical address. /dev/ioat_test must be enabled by root and is only R/W root, so this is approximately as dangerous as /dev/mem and /dev/kmem. Sponsored by: EMC / Isilon Storage Division

ioat: Define DMACAPABILITY bits

2015-10-28T02:37:24Z

Check for BFILL capability before initiating blockfill operations. Sponsored by: EMC / Isilon Storage Division